EUVD-2026-77144
GHSA-w79w-7hq2-gg5c
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible admin panel requires low-privilege auth; router compromise changes scope affecting downstream network infrastructure.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
7DescriptionCVE.org
A vulnerability was detected in Totolink A3002MU Hh-B20211125.1046. Impacted is the function formNewSchedule of the file /boafrm/formNewSchedule of the component boa. The manipulation of the argument submit-url results in buffer overflow. The attack may be performed from remote. The exploit is now public and may be used.
AnalysisAI
Stack-based buffer overflow in the Totolink A3002MU router's boa HTTP server allows a network-adjacent authenticated attacker to overwrite memory via an oversized submit-url argument submitted to the formNewSchedule handler at /boafrm/formNewSchedule, likely yielding arbitrary code execution on the device. The affected firmware version is Hh-B20211125.1046. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the attacker must be able to reach the boa HTTP admin interface on the A3002MU, either from the LAN or if the WAN-side admin panel is exposed; (2) the attacker must possess valid router credentials (PR:L), however default credentials (admin/admin or similar) are common on this device class and substantially lower this bar; (3) firmware version Hh-B20211125.1046 must be running, though the wildcard CPE suggests other versions may also be affected. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.6 and the vector `PR:L` both indicate that authentication is required, which is the primary limiting factor relative to a raw 9.x critical. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all Totolik A3002MU routers in production (verify affected firmware version Hh-B20211125.1046), immediately change all administrative credentials to unique strong passwords, and implement firewall rules to restrict HTTP/HTTPS admin interface access (ports 80/443) to trusted administrative IP ranges only. …
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Buffer overflow in TOTOLINK A3002MU router firmware version Hh-B20211125.1046 allows authenticated remote attackers to c
Stack-based buffer overflow in Totolink A3002MU router firmware B20211125.1046 allows authenticated remote attackers to
Cross-site scripting in the Anchor Tag Handler of Totolink A3002MU firmware version Hh-B20211125.1046 allows network-acc
Same weakness CWE-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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